I have two Glocks Gen 4s (22 and 26)and have never had any problems with either of them at all. I had a Glock 17 Gen 1 back in the 80s that would stovepipe every once in a while, but no problems with the Gen 4s so far.

If I had a gun that was as unreliable as you say your Kahr is, I would look at getting it repaired under warranty or pay to have a gunsmith fix it.